Dai-Ichi Cherry MX clone

Supposedly these can still be ordered, with an MOQ of 2000. Note the slider — yellow for clone again!

Others

Omron ball contact

This picture is from the same gao xiaoqing AliExpress item as the Dai-Ichi Cherry MX clones. These switches are reported to be no longer manufactured.

These are now identified as genuine Omron; the Omron branding on the base was not discovered until they reappeared for sale. These are presently termed “Omron ball contact” and are not Futaba clones: they accept different keycaps and the terminals are at 90° to the Futaba ML series design. Internally they are very similar to Tokai MM9 series, which was a most unexpected find.